Latest IBM Aptitude Question SOLUTION: a)3,7,10,8,4,12,0,5,5,3,2,? Ans:(Divide the 3 elements into one group ) 3+7=10,8+4=12,0+5=5,so 3+2=5 is the answer. b)0,1,1,2,0.5,2,2,4,2,2,4,3,7,2,? c)1,1,2,4,6,36,39,1521,? d)

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(#M40153859) IBM Logical Reasoning question NUMBER SERIES Keep an EYE

a)3,7,10,8,4,12,0,5,5,3,2,?
Ans:(Divide the 3 elements into one group ) 3+7=10,8+4=12,0+5=5,so 3+2=5 is the answer.

b)0,1,1,2,0.5,2,2,4,2,2,4,3,7,2,?

c)1,1,2,4,6,36,39,1521,?

d)7,4,6,3,4.5,1.5,2.25,? Ans: -0.75

e)2,9,5,49,11,169,? Ans:22

f)49,7,98,16,4,48,9,3,36,25,5,?

g)2,6,5,14,11,26,17,? Ans:60

h)7,0,1,8,5,12,9,26,3,23,2,? Ans:28

i)2,3,10,15,26,? Ans:35

j)5,16,22,68,28,87,36,106,11,? Ans:45

k)7776,625,64,9,?

l)13,24,36,23,34,56,33,44,96,43,54,? Ans:116

m)0,1,2,0.5,2,2,2,2,4,3,2,? Ans:3.5

n)18,24,5,21,27,8,17,23,4,24,30,? Ans:9

o)3,5,2,100,4,7,3,196,1,6,5,? Ans:144

p)8,5,9,7,2,25,5,1,16,8,6,? Ans:15

q)-3,6,1,-2,4,-1,-1,2,-3,?

r)1/4,1/4,1/2,3/2,6,? Ans:30

Asked In IBM deepak kumar (8 years ago)

Unsolved Read Solution (25)

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Read Solution (25) :

kiranmai  (8 years ago)

p) 8-5=3 3^2=9
7-2=5 5^2=25
5-1=4 4^2=16
8-6=2 2^2=4
so answer 4

Is this solution Helpfull? Yes (17) | No   

srilatha tollikonda  (8 years ago)

g)2,6,5,14,11,26,17,?


ans is 38

here we are multiply with 2 the alternate prime numbers

2 , (3*2)=6 , 5 , (7*2)=14 , 11 , (13*2)=26 , 17 , (19*2)=38

Is this solution Helpfull? Yes (14) | No   

Dorina Ciobanu  (8 years ago)

n) 1) 18+3=21-4=17+7=24; (18, 21, 17, 24)
2) 24+3=27-4=23+7=30 (24, 27,23, 30)
3) 5+3=8-4=4+7=11 (5, 8, 4, 11)
So the missing number is 11.

Is this solution Helpfull? Yes (11) | No   

meka.jaya devi  (8 years ago)

b) answer is 3.5
decide the numbers in series ,
0. 1. 1. 2. 0.5
2. 2. 4. 2. 2
4. 3. 7. 2. ?
in this take first row 0 (0+2=2)
2(2+2=4)
4
again consider 2 and row 1,2,3( difference b/w each no is 1)..so repeat the same process for all the rows ,last row (0.5,2,?)
ans:-0.5+1.5=2
2+1.5=3.5

Is this solution Helpfull? Yes (10) | No (4)  

najma  (8 years ago)

c) 1,1,2,4,6,36,39,1521,?

ans is 1525

(1,1),(2,4),(6,36),(39,1521),(?)

1*1=1 ---> add 1 to result 1+1=2

2*2=4 ---> add 2 to result 4+2=6

6*6=36 ---> add 3 to result 36+3=39

39*39=1521 --> add 4 to result 1521+4=1525

e) 2,9,5,49,11,169,?

ans is 17

here we are square the alternate prime numbers

2 3*3=9 5 7*7=49 11 13*13=169 17

f) 49,7,98,16,4,48,9,3,36,25,5,?

ans is 125

divide into groups (49,7,98),(16,4,48),(9,3,36),(25,5,?)

in first group to get 2nd num divide 49/7=7

to get 3rd num divide 49*2=98

in second group to get 2nd num divide 16/4=4

to get 3rd num divide 16*3=48

in third group to get 2nd num divide 9/3=3

to get 3rd num divide 9*4=36

in fourth group to get 2nd num divide 25/5=5

to get 3rd num divide 25*5=125

g) 2,6,5,14,11,26,17,?

ans is 39

divide 2 num as pair (2,6),(5,14),(11,26),(17,?)

6-2= 4 add 5 to get next pair diff 4+5=9

14-5=9 add 6 to get next pair diff 9+6=15

26-11=15 add 7 to get next pair diff 15+7=22

here we don't know x, but we know result of next pair

x-17=22 on solving this equation we get x=39

l) 13,24,36,23,34,56,33,44,96,43,54,?

divide numbers as (13,24),36,(23,34),56,(33,44),96,(43,54),(?)

24-13=11 36 34-23=11 56 44-33=11 96 54-43=11 ?

11 36 11 56 11 96 11 ?

from the above series diff b/w alternate numbers are

56-36=20

96-56=40=20*2

x-96=80=40*2 ---> on solving we get x=176

Is this solution Helpfull? Yes (9) | No (6)  

VAISHNAWI RUDRAWAR  (8 years ago)

o) 3+5+2=10*10=100
4+7+3=14*14=196
1+6+5= 12*12=144

Is this solution Helpfull? Yes (9) | No   

Ramkumar  (8 years ago)

2,3,10,15,26..?
1 * 1 = 1+1 = 2
2 * 2 = 4-1= 3
3 * 3 = 9 + 1 = 10
4 * 4 = 16 - 1 =15
5 * 5 = 25+1 =26
6 * 6 = 36 - 1 =35

Is this solution Helpfull? Yes (9) | No (2)  

MANIKONDA MALAKONDAIAH  (8 years ago)

R) (1/4)*1=1/4;
(1/4)*2=1/2;
(1/2)*3=3/2;
(3/2)*4=6;
6*5=30;
answer is 30;

Is this solution Helpfull? Yes (9) | No   

VAISHNAWI RUDRAWAR  (8 years ago)

h) 7+0+1=8
5+12+9=26
3+23+5=28

Is this solution Helpfull? Yes (6) | No   

Mahesh Tidke  (8 years ago)

c)1,1,2,4,6,36,39,1521,?
........1525

Is this solution Helpfull? Yes (4) | No (2)  

Sayandeep Jana  (7 years ago)

j) 5,16,22,68,28,87,36,106,11,?
It will be:
5
(5*3)+1=16
22
(22*3)+2=68
28
(28*3)+3=87
36
(36*3)+4=112(it will not 106 according to the sequence)
11
(11*3)+5=38

Is this solution Helpfull? Yes (4) | No   

akhil  (8 years ago)

g) 2,6,5,14,11,26,17
divide it into pairs
(2,6) (5,14)(11,26)(17,?)
2=2 6=6
5=2^2+1 14=6*2^1 +2
11=2^3+1 26=6*2^2 + 2
17=2^4+1 so 6*2^3 + 2 =48+2 =50
so next number is 50

Is this solution Helpfull? Yes (2) | No (7)  

Sayandeep Jana  (7 years ago)

e)2,9,5,49,11,169,?
it will be 17...because 2,3^2,5,7^2,11,13^2,17,19^2 series of all prime numbers.

Is this solution Helpfull? Yes (2) | No (2)  

Rahul kumar  (7 years ago)

l)Right series is-13,24,36,23,34,56,33,44,76,43,54,??
--------------------------------------------------------------------------------
ANS-96
solution a) divide series into 4 parts-
(13,24,36)(23,34,56)(33,44,76)(43,54,?)
13+24=37-1=36
23+34=57-1=56
33+44=77-1=76
hence next series is-43+54=97-1=96
-----------------------------------------------------------
solution b)Divide series into 4 parts like above -
13+11=24,24+12=36
23+11=34,34+22=56
33+11=44.44+32=76
hence next series is-
43+11=54,54+42=96

Is this solution Helpfull? Yes (2) | No   

deepak kumar  (8 years ago)

ans=8;
three group (0,1,1,2,0.5) ( 2,2,4,2,2) (4,3,7,2,_)
1st group( 0+1=1,2,0.5)
2nd group (2+2=4,2,0.5*4=2)
3rd group (4+3=7,2,2*4=8)

Is this solution Helpfull? Yes (1) | No (3)  

VAISHNAWI RUDRAWAR  (8 years ago)

n) 24-18=6-1=5
27-21=6+2=8
23-17=7-3=4
30-24=6+4=10

Is this solution Helpfull? Yes (1) | No (9)  

meka.jaya devi  (8 years ago)

h)and:-28
divide into groups (7,0,1)(8,5,12)(9,26,3)(23,2,?)
adding first GRP numbers I.e 7+0+1=8 ,gives first no in second GRP,in the same way 5+12+9=26 gives 2nd no value in 3 rd series.....
by following this we will get 3 rd no value in 4 the series which is unknown to us....3+23+2= 28

Is this solution Helpfull? Yes (1) | No   

tany  (7 years ago)

q) -3,6,1,-2,4,-1,-1,2,-3,?
(-3,6,1)
(-2,4,-1)
(-1,2,-3)
(0,0,-5)
so the ans is 0

Is this solution Helpfull? Yes (1) | No   

Pratibha Rai  (7 years ago)

M) divide them in 3 containing 4 elements each.i.e,
(0,1,2,0.5) (2,2,2,2) (4,3,2,?)
Now, add first 2 nos and divide by third no.
=> (0+1)= 1/2= 0.5
=> (2+2)= 4/2= 2
=> (4+3)= 7/2= 3.5 ans.

Is this solution Helpfull? Yes (1) | No   

PRASHANTHI SADHU  (7 years ago)

j) 5,16,22,68,28,87,36,106,11,?
divide the series.......(5,16),(22,68),(28,87),(36,106),(11,?)

5*3 +1=16
22*3 +2=68
28*3 +3=87
36*3 -2=106
11*3 -1=32
ans: 32

Is this solution Helpfull? Yes | No (5)  

barsa prusty  (7 years ago)

e)23
the 1st is

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Raja sekhar  (7 years ago)

n) 18,24,5,21,27,8,17,23,4,24,30,??
24-18=6-1=5
27-21=6+2=8
23-17=6-2=4
30-24=6+3=9

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Uppala Sowjanya  (7 years ago)

can any one send the answer the for r?

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Roobini Rajendran  (6 years ago)

k) 7776=6^5
625=5^4
64=4^3
9=3^2
so the next number is 2^1=2

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Ruby jaiswal  (6 years ago)

d) 7-3=4
6-3=3
4.5-3=1.5
2.25-3= -0.75
so ans= -0.75

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